The park tool crs 15 crown race setter for 15 inch column uses two different insert rings to install bearing races on the 15 and 1 14 forks the bearing surface is spared a direct hit by using an aluminum inserts using a hammer tap firmly on the end cap of the tube and seat the race into its proper place safely and accurately the crs 15 will work on forks with column length of 330mm or less park tool crs 15 crown race setter for 15 inch column features precision installati